redis watch

Affairs Ømulti,exec action: Start and end tag of transaction N executes the multi command, Redis feedback OK indicates the start of the transaction, executes the EXEC command, ends the transaction, and begins the sequential execution of the operation in the transaction. 127.0.0.1:6379[5]> MULTIOk127.0.0.1:6379[5]> Set K1 1QUEUED127.0.0.1:6379[5]> Set K2 2QUEUED127.0.0.1:6379[5]> exec1) OK2) OK127.0.0.1:6379[5]> Get K1"1"127.0.0.1:6379[5]>

Redis watch command Purpose:Monitors one or more keys. If the key is changed by another command before the transaction is executed, the transaction is interrupted.Usage: redis 127.0.0.1:6379> WATCH key1 key2OKRedis unwatch command Purpose:This command is used to cancel monitoring of all keys by the

Python has a lot of basic operations on redis, and here are some of the things that people find interesting: 1.redis transactional operations and watch optimistic locking, followed by a description of how to use Redis asynchronously under 2.tornadoRedis is a single-process single-threaded model, itself to the external

This article is applied through the Watch (monitoring) +mutil (transaction) implementation to the relevant scenarios such as distributed high concurrency processing. The bottom of the Redis-cli.exe to test multiple thread modifications, encountered problems and solve the problem.High concurrency to modify the same key encountered problems:1) Define a hash type of Key,key: Lock_test, the value of element loc

intValuesetinbetween = 23; $ Final intValuesetwithinsession = 42;Panax Notoginseng - /* the * By default all template method call creates a new connection-so + * WATCH, Mutli, EXEC, Unwatch won ' t work because of the missing A * Context. to do use of transaction support use Sessioncallback which the * reuses the underlying connection. + */ -Template.execute (NewSessioncallback() { $ $ @Override - PublicVoid Ex

For specific comments, the code looks like this:1 Public Static voidtranstest ()2 {3Redisclient client1 =Newredisclient (host, port);4Redisclient Client2 =Newredisclient (host, port);5 //initial K1 is 16Client1. setstring> ("K1","1");7Console.WriteLine (Client1. getstring> ("K1"));8 //Monitoring K19Client1. Watch ("K1");Ten vartrans =Client1. CreateTransaction (); OneTrans. Queuecommand (r = r.setst

transactions." As we all know, business refers to "a complete action, or all the implementation, or nothing to do." Before talking about Redis transaction processing, we must first introduce four Redis instructions, namely multi, EXEC, discard, WATCH. These four directives form the basis of REDIS transaction process

Exec () method being called.Watch, Unwatch (after the code test, can not achieve the said effect)Monitor if the value of a key is changed by another program. If this key is modified between watch and Exec (method), the execution of this multi/exec transaction will fail (return false)unwatch cancel all keys monitored by this programparameter, List of a pair of keys$redis->

Reprint: http://fanshuyao.iteye.com/blog/2384074First, Redis:Https://github.com/MicrosoftArchive/redis/releases1, Redis-x64-3.2.100.msi for the installation version2, Redis-x64-3.2.100.zip for compression packageSecond, because I use the installation version, this issue is also the installation version of the problem1, after the installation of the directory2. Th

Where did the smart watch lose ?, Smart Watch loss The failure of smart watch products mainly lies in the industry making the next huge mistake. Its promotion started with targeting individual consumers rather than enterprise-level users. This initial intention of marketization has made the smart watch industry diffic

Apple Watch application development experience: the pitfalls I encounter, watch Application Development The author of this article, Zhang Zhongliang, is a developer of the Apple Watch application. He spent a week using pure Objective-C language to complete the development of the Apple Watch tick list application. Here,

another 3 days is the day that Apple Watch opens online bookings. In order for more consumers to understand and buyApple Watch, the company is also a lot of spelling. 1 , Apple Watch can be purchased at half priceaccording The Verge reports that Apple chief Executive Tim Cook (Tim Cook) is sending the company to all employees todayin a memo announcing that emplo

First pit: Design with Apple Watch as center Is it wrong to make a design with a watch as its core? I know it sounds strange, but in fact, the best Apple Watch apps we've ever seen are not based on the functionality of the table, but on those who use the table as an assistive tool for other IOS devices. And the Apple Watch